Second Abden Shale, Level 88 (Carboniferous of the United Kingdom)

Where: Scotland, United Kingdom (56.1° N, 3.2° W)

• Paleocoordinates: 20.2° S, 4.8° W (Wright 2013)

• small collection-level geographic resolution

When: Second Abden Shale Formation, Brigantian (336.0 - 330.9 Ma)

• Brigantian age was shown by Brindley and Spinner 1989, Proc. Yorkshire Geol. Soc. 47:215-231

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, silty, sandy shale

• Sediments were deposited in a gap between periods of volcanic activity, the series represents a transgression from tidal-flat to subtidal environment.
• thin sections of the shale show it to consist predominantly of clay minerals with varying admixtures of sand and silt sized particles, normally quartz but with some chlorite and feldspar...interlaminations of fine sandy material in their more argillaceous basic substance.

Collection methods: bulk, chemical, mechanical, peel or thin section, sieve,

Primary reference: L. Ferguson. 1962. The paleoecology of a Lower Carboniferous marine transgression. Journal of Paleontology 36:1090-1107 [J. Alroy/M. Sommers/J. Ju]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 6421: authorized by John Alroy, entered by Mike Sommers on 01.03.2000

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Rastidiscus sp., Stacheiodes sp.
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Stenolaemata
 Cryptostomata - Fenestellidae
Fenestellidae indet.
Lingulata
 Lingulida - Discinidae
Orbiculoidea nitida
Orbiculoidea nitida Phillips 1836
Craniata
 Craniida - Craniidae
Crania sp.
Crania sp. Retzius 1781
Strophomenata
 Productida - Productellidae
Eomarginifera longispinus
Rhynchonellata
 Orthida - Schizophoriidae
Schizophoria sp., Schizophoria resupinata
Schizophoria sp. King 1850
Gastropoda
 Murchisoniina - Gosseletinidae
Glabrocingulum armstrongi
Glabrocingulum armstrongi Thomas 1940 snail
 Neritoidea - Naticopsidae
Naticopsis sp., Naticopsis sp.
Naticopsis sp. M'Coy 1844 snail
nuclei
Naticopsis sp. M'Coy 1844 snail
 Heterostropha - Donaldinidae
"Aclisina pulchra" = Donaldina pulchra
"Aclisina pulchra" = Donaldina pulchra de Koninck 1881 snail
var. intermedia
 Zygopleuroidea - Pseudozygopleuridae
"Zygopleura lefebvrei" = Pseudozygopleura lefebvrei
"Zygopleura lefebvrei" = Pseudozygopleura lefebvrei Léveillé 1835 snail
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
lamellibranch spat
Ostracoda
 Palaeocopida - Paraparchitidae
Paraparchites okeni
 Coleoloida -
Ortonia carbonaria
Foraminifera
 Ammodiscoidea - Ammodiscidae
Glomospira sp.
Glomospira sp. Rzehak 1895
Rhodophyceae
  - Aoujgaliaceae
Stacheia sp.
Stacheia sp. Brady 1876